DodoApp: Abstract away service definition

TODO(gio): There seems to be a performance degradation evaluating cue files.

Change-Id: Ib157dfaa1c108f06f3026032e8fad79c06f42d3a
diff --git a/core/installer/samples/blog.rest b/core/installer/samples/blog.rest
index 2a0b95c..f0116b7 100644
--- a/core/installer/samples/blog.rest
+++ b/core/installer/samples/blog.rest
@@ -1,4 +1,4 @@
-PUT http://appmanager.hgrz-appmanager.svc.cluster.local/api/dodo-app/dodo-app-snd
+POST http://appmanager.hgrz-appmanager.svc.cluster.local/api/dodo-app
 Content-Type: application/json
 
 {
@@ -20,7 +20,7 @@
           "groups": "pr"
         },
         "network": "Private",
-        "subdomain": "blog"
+        "subdomain": "test-blog"
       }],
       "type": "nextjs:deno-2.0.0",
       "preBuildCommands": [
@@ -43,4 +43,4 @@
         }
       ]
   }
-}
\ No newline at end of file
+}